OSLO, June 30 (Reuters) - A Norwegian appeals court on Friday ruled in favour of the government in a lawsuit brought by investors who argued Norway’s cut in gas pipeline tariffs was unlawful and would cost them 15 billion Norwegian crowns ($1.79 billion) in lost earnings through 2028, one of the plaintiffs said.

The decision upheld the 2015 verdict of a lower court, which said the government acted within its rights when it lowered tariffs for transporting gas through offshore pipelines, Njord Gas Infrastructure said in a statement.